Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
91423 (1999 OT4)
Classification: Main-belt Asteroid          SPK-ID: 2091423
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117560206022399 4.8553e-08  
a 2.668689713123798 1.8209e-08 au
q 2.354958000639107 1.343e-07 au
i 4.313226394860199 4.9912e-06 deg
node 292.6222440144383 7.3186e-05 deg
peri 22.78935594699803 7.7507e-05 deg
M 270.2777870996202 2.901e-05 deg
tp 2459397.365205849729
(2021-Jul-01.86520585)
0.00012985 TDB
period 1592.375728232822
4.36
1.6297e-05
4.462e-08
d
yr
n .2260772967191096 2.3138e-09 deg/d
Q 2.982421425608488 2.0349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      7593 days (20.79 yr)  
   first obs. used      1999-07-16  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:57  

Additional Information
 Earth MOID = 1.34182 au 
 Jupiter MOID = 2.2693 au 
 T_jup = 3.368 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO320101  

91423 (1999 OT4)          Discovered 1999-Jul-16 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1900-Dec-18 02:09 00:02 Inter 0.0374148351417736 0.037393806963897 0.0374358716710328 4.1874864298015 4.18748633636395 2415371.589803526 1.96648809752496 1369.39439120893 44.3286207373542 -40.0955482446332 81315.5348897181 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:58 2020-Nov-12 20:39
2071-Jul-22 00:43 00:02 Psych 0.0451358441456206 0.0451211385407946 0.0451505500749793 3.10560562725532 3.10560554094051 2477679.530186450 1.75281277919816 757.095100441733 67.1881997824099 -14.7397256686916 26943.1926157701 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:58 2020-Nov-12 20:39
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-25 03:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin